Improvement in the methods of burning gases in furnaces



1. c. TIFFANY.

Methods of Burning Gases in Furnaces. NO 145257 Patented D c.2,1873.

Wziwsses 7 AM PHOrD-LITIIMRAF/l/C Ca M X (ossomlz's PNMESS) UNITED STATES PATENT Orrron JOSEPH O. TIFFANY, OF PORTSMOUTH, NEW HAMPSHIRE, ASSIGNOR OF ONE HALF HIS RIGHT TO CHARLES F. DODGE, OF NEW YORK CITY.

IMPROVEMENT IN THE METHODS OF BURNING GASES IN FURNACES..

Specification forming part of Letters Patent No. 145,257, dated December 2, 1873; application filed November 14,1873.

To all whom it may concern:

Be it known that I, JOSEPH G. TIFFANY, of Portsmouth, in the county of Rockingham and State of New Hampshire, have invented certain new and useful Improvements in Method of Burning Gases in Furnaces, of which the following is a specification:

This invention has for its object to furnish effectual means for consuming the gases or products of combustion evolved in furnaces, and to create a more perfect combustion of the fuel. The invention consists in arranging, in proper respect to a furnacegrate or firechamber, a perforated pipe or nozzle, which is made entirely of platinum or of other metals not liable to fuse below a white heat; and also capable of resisting the action of steam passing through ie-same into the fire-chamber,

for insurii g a perfect combustion of the fuel and products of combustion. The invention also consists in inserting the steam-jet tube through an opening in the shell of the boiler in such a manner as to form a surrounding space for the entrance of air into the fire-chamber, and in applying to the steam-pipe a sliding valve or plug, which is employed for regulating the admission of air, as will hereinafter be more fully described.

In the accompanying drawings, A designates as much of a furnace as is necessary to a full understanding of my invention. Immediately above the grate, I locate means for distributing steam in jets or hydrogen gas, for producing a more perfect combustion of the fuel, and of the gases or products of combustion. The steam is introduced into the firechamber by means of a perforated pipe, 13, which may be either of a curved, semicircular, or circular, form, as shown, or it may be in the form of a rose-head. The pipe for distributing the steam, owing to the intense heat to which it is exposed externally by the fire and inter nally by the steam, would be very soon destroyed or decomposed if made of iron, and for preventing this result I propose to construct the pipe, or that portion of it which is subjected to the direct action of the fire, of platinum, or its allied metals, such as iridium, palladium, &c., which possess the quality of resisting heat without fusion, to a degree never attained in an ordinary furnace. Instead of making the steam-jet pipe entirely of platinum, it may be made of iron, lined both externally and internally with platinum, which is applied by any of the known processes of plating metals. The steam-distrib utin g pipe is passed through an opening or passage, D, formed'in the boiler-shell or in the door, in proper relation to the fire-chamber, and of such a size as to leave a space surrounding the steam-pipe for the introduction into the fire-chamber of atmospheric air, which min gles with the steam, and serves to improve the combustion of the fuel, forming also a proper draft. A valve,

E, of a conical or tapering form, is fitted to slide or move upon the external portion of the steam-conducting pipe for regulating the supply of air to the furnace, or for entirely closing the airinlet when inserted into the mouth of the same. The valve is made to move upon a screw-threaded portion of the pipe, or it may be retained by friction, or its own weight, as found most desirable.

A steam-jet pipe, or a series of pipes, when constructed of platinum, wholly or in part, and arranged as shown, will be found to be most effectual for the purpose of aiding combustion, without liability of destruction.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A perforated pipe made wholly or in part of platinum, or its alloys, or of iron coated or lined with platinum, projecting into or arranged within the fire-chamber of a furnace for conveying and distributing aeriform fluids for promoting combustion, substantially as set forth.

2. In combination with the induction steamjet pipe, the. sliding conoidal-shaped valve ad justabl'e upon the same for regulating the admission of air to the fire-chamber, substan tially as described.

In testimony that I claim the foregoing I I have hereunto set my hand this 7th day of November, 1873.

JOSEPH OAPRON TIFFANY. Witnesses:

J AMES L. NORRIS,

A. H. NORRIS. 

